package com.itheima.chanlin.config;

import com.itheima.chanlin.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {


//    @Autowired
//    private ProjectInterceptor projectInterceptor;
//
//    @Override
//    protected void addInterceptors(InterceptorRegistry registry) {
//        //配置多拦截器
//        registry.addInterceptor(projectInterceptor)
//                .addPathPatterns("/*","/employee/*");
//    }

    /*
    * 设置静态资源映射
    *
    * */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {

//        log.error("addResourceHandlers:{}",String.valueOf(Thread.currentThread().getId()));//线程id查看

        log.info("开始进行静态资源映射....");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");

    }

    /**
     * 扩展mvc框架的消息转换器
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);

    }



}
